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There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then but the diameter of A is half that of B. If A and B are heated to the [...]

If a metallic sphere gets cooled from 62 C to 50 C in 10 minutes and in the next 10 minutes gets cooled to 42 C, then the temperature of the surroundings is If a metallic sphere gets cooled from 62 C to 50 C in 10 minutes and in the next 10 minutes gets [...]

A liquid cools down from 70 C to 60 C in 5 minutes. The time taken to cool it from 60 C to 50 C will be A liquid cools down from 70 C to 60 C in 5 minutes. The time taken to cool it from 60 C to 50 C will be October [...]

Liquid is filled in a vessel which is kept in a room with temperature 20 C. When the temperature of the liquid is 80 C, then it loses heat at the rate of 60 cal/sec. What will Liquid is filled in a vessel which is kept in a room with temperature 20 C. When the [...]

In Newton’s experiment of cooling, the water equivalent of two similar calorimeters is 10 g each. They are filled with 350 g of water and 300 g of liquid (equal volumes) separately. In Newton's experiment of cooling the water equivalent of two similar calorimeters is 10 g each. They are filled with 350 g of [...]

A bucket full of hot water cools from 75 C to 70 C in time T1, from 70 C to 65 C in time T2 and from 65 C to 60 C in time T3, then A bucket full of hot water cools from 75 C to 70 C in time T1 from 70 C [...]

Hot water cools from 60 C to 50 C in the first 10 minutes and to 42 C in the next 10 minutes. The temperature of the surrounding is Hot water cools from 60 C to 50 C in the first 10 minutes and to 42 C in the next 10 minutes. The temperature of [...]

The energy spectrum of a black body exhibits maximum energy around a wavelength lemda 0. The temperature of the black body is now changed such that the energy is maximum The energy spectrum of a black body exhibits maximum energy around a wavelength lemda 0. The temperature of the black body is now changed such [...]

If between wavelength lemda and lemda + dlemda, e lemda, and a lemda are the emissive and absorptive powers of a body and Elemda is the emissive power of a perfectly black body, and a lemda are the emissive and absorptive powers of a body and Elemda is the emissive power of a perfectly black [...]

A sphere and a cube of same material and same volume are heated upto same temperature and allowed to cool in the same surroundings. The ratio of the amounts of radiations A sphere and a cube of same material and same volume are heated upto same temperature and allowed to cool in the same surroundings. [...]